CN217766956U

CN217766956U - Underground optical cable with waterproof function

Info

Publication number: CN217766956U
Application number: CN202221435994.6U
Authority: CN
Inventors: 管文浩
Original assignee: Jiangsu Yizhi Communication Technology Co ltd
Current assignee: Jiangsu Yizhi Communication Technology Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-11-08
Anticipated expiration: 2032-06-10

Abstract

The utility model discloses an underground optical cable with waterproof function, including the insulating gum cover, the inside of waterproof gum cover is provided with the buffer layer, the inside of buffer layer is provided with the water blocking layer, be provided with the cable core in the water blocking layer, the cable core is including the polyethylene sheath, the fiber tube, the tensile rope made of hemp, the core is strengthened at the center, dampproofing pearl and compression tube, the polyethylene sheath sets up in the inside of water blocking layer, the edge of compression tube all with the inner wall fixed connection of polyethylene sheath, a plurality of dampproofing pearl equidistance fixed connection are in the inner wall of polyethylene sheath, the core is strengthened at the center and is located the middle part of polyethylene sheath, a plurality of tensile rope made of hemp equidistance distribute the inner chamber at the water blocking layer, a plurality of fiber tube equidistance distribute the inner chamber at the polyethylene sheath. The utility model discloses utilize polyethylene sheath, optic fibre pipe, tensile rope made of hemp, center to strengthen core, dampproofing pearl and resistance to compression pipe matched with mode that sets up, can fully absorb the steam in the underground infiltration advances the optical cable, prolonged the life of optical cable.

Description

Underground optical cable with waterproof function

Technical Field

The utility model relates to an optical cable manufacturing technical field, in particular to underground optical cable with waterproof function.

Background

Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The optical cable is mainly composed of optical fibers, a plastic protective sleeve and a plastic outer skin, and metals such as gold, silver, copper and aluminum are not contained in the optical cable, so that the optical cable generally has no recycling value. The optical cable is a communication line which is formed by a certain number of optical fibers into a cable core in a certain mode, is externally coated with a sheath, and is also coated with an outer protective layer for realizing optical signal transmission.

With the continuous development of economic construction and urban construction, communication network construction and reconstruction tasks are increasingly heavy. And city distribution network optical cable ization is reformed transform continuously perfect, and the underground is all laid to most when laying to the optical cable in the city, because bury deeply in soil, moisture is great in the soil, and the vapor permeates easily for a long time in the exocuticle of optical cable for the optical cable is inside to be affected by damp easily, thereby leads to the optical cable to damage, influences the normal use of optical cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an underground optical cable with waterproof function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an underground optical cable with a waterproof function comprises an insulating rubber sleeve, wherein a buffer layer is arranged inside the insulating rubber sleeve, a water-blocking layer is arranged inside the buffer layer, and a cable core is arranged in the water-blocking layer;

the cable core is including polyethylene sheath, fiber tube, tensile twine, center reinforcing core, dampproofing pearl and withstand voltage pipe, the polyethylene sheath sets up in the inside of water-blocking layer, the edge of withstand voltage pipe all with the inner wall fixed connection of polyethylene sheath, a plurality of dampproofing pearl equidistance fixed connection is in the inner wall of polyethylene sheath, the center reinforcing core is located the middle part of polyethylene sheath, and is a plurality of tensile twine equidistance distributes at the inner chamber of water-blocking layer, and is a plurality of fiber tube equidistance distributes at the inner chamber of polyethylene sheath, tensile twine and fiber tube cross arrangement.

Preferably, the optical fiber tube comprises a loose tube, a first waterproof filler and optical fibers, the optical fibers are all located in the inner cavity of the loose tube, and the first waterproof filler is filled in the inner cavity of the loose tube.

Preferably, the buffer layer is made of an elastic insulating material, and the water-blocking layer is made of a polyethylene material.

Preferably, the central reinforcing core is made of a metal material, and polyethylene is arranged outside the central reinforcing core.

Preferably, the cross section of the pressure-resistant pipe is in a regular hexagon shape, the pressure-resistant pipe is made of elastic rubber materials, and the cross section of the moisture-proof bead is in a semicircular shape.

Preferably, a second waterproof filler is filled between the central reinforcing core and the pressure-resistant pipe.

Preferably, the first waterproof filler and the second waterproof filler are both ointment, and the loose tube is made of PBT material.

The utility model discloses a technological effect and advantage:

(1) The utility model utilizes the setting mode of matching the polyethylene sheath, the optical fiber tube, the tensile hemp rope, the central reinforced core, the damp-proof bead and the compression-resistant tube, the damp-proof bead has stable chemical property and strong moisture absorption performance, can fully absorb water vapor permeating into the optical cable underground, has good damp-proof effect, the compression-resistant tube is made of rubber, has good waterproof performance, and prolongs the service life of the optical cable;

(2) The utility model discloses utilize water blocking layer, first waterproof filler and the waterproof filler matched with of second mode that sets up, the multilayer is waterproof can effectually keep apart external moisture, keeps the inside operational environment of optical cable, has good water-proof effects.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the front internal structure of the present invention.

Figure 3 is the utility model discloses cable core inner structure schematic diagram.

In the figure: 1. insulating rubber sleeves; 2. a buffer layer; 3. a water resistant layer; 4. a cable core; 41. a polyethylene jacket; 42. an optical fiber tube; 421. loosening the sleeve; 422. a first waterproof filler; 423. an optical fiber; 43. tensile hemp ropes; 44. a central reinforcing core; 45. moisture-proof beads; 46. a pressure resistant pipe; 5. a second waterproof filler.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The utility model provides an underground optical cable with waterproof function as shown in figures 1-3, which comprises an insulating rubber sleeve 1, a buffer layer 2 is arranged in the insulating rubber sleeve, a water-resistant layer 3 is arranged in the buffer layer 2, the water-resistant layer 3 plays a role of waterproof for the first layer of the optical cable, a cable core 4 is arranged in the water-resistant layer 3, the cable core 4 comprises a polyethylene sheath 41, an optical fiber tube 42, a tensile hemp rope 43, a central reinforced core 44, damp-proof beads 45 and a pressure-resistant tube 46, the polyethylene sheath 41 is arranged in the water-resistant layer 3, the corners of the pressure-resistant tube 46 are fixedly connected with the inner wall of the polyethylene sheath 41, a plurality of damp-proof beads 45 are fixedly connected with the inner wall of the polyethylene sheath 41 at equal intervals, the damp-proof beads 45 have stable chemical properties and strong moisture absorption performance, the water vapor permeating into the optical cable can be fully absorbed, the central reinforced core 44 is positioned in the middle part of the polyethylene sheath 41, the central reinforced core 44 plays a role of supporting the whole optical cable and resisting tension, the tensile hemp ropes 43 are equidistantly distributed in the inner cavity of the water-resistant layer 3, the tensile strength of the tensile hemp ropes 43 is high, the function of filling and increasing the tensile strength of the optical cable is played, the optical fiber tubes 42 are equidistantly distributed in the inner cavity of the polyethylene sheath 41, the tensile hemp ropes 43 and the optical fiber tubes 42 are arranged in a crossed manner, the tensile strength of the optical fiber tubes 42 can be improved, the optical fiber tubes 42 comprise loose tubes 421, first waterproof fillers 422 and optical fibers 423, the optical fibers 423 are all located in the inner cavity of the loose tubes 421, the first waterproof fillers 422 are filled in the inner cavity of the loose tubes 421, the buffer layer 2 is made of an elastic insulating material, the buffer layer 2 plays a role of insulating and buffering, the water-resistant layer 3 is made of a polyethylene material, the polyethylene is insoluble in a common solvent, the water absorption is small, and the flexibility can be maintained at a low temperature, electric insulation is good, center core 44 is metal material, center core 44's outside is provided with the polyethylene, prevent that center core 44 from using the back for a long time, metal material is affected by damp degeneration, influence the normal use of optical cable, resistance to compression pipe 46 cross section is regular hexagon, regular hexagon crushing resistance is better, resistance to compression pipe 46 is elastic rubber material, the rubber material is macromolecular material, water-proof property is good, dampproofing pearl 45 cross section is semi-circular, it has second waterproof filler 5 to fill between center core 44 and the resistance to compression pipe 46, first waterproof filler 422 is the oleamen with second waterproof filler 5, the high temperature resistance and the extreme pressure performance of oleamen are good, can play fine supporting role when receiving the extrusion, loose sleeve 421 is the PBT material.

The utility model discloses theory of operation: through the arrangement of the moisture-proof bead 45 and the compression-resistant pipe 46, when the optical cable is extruded by external force, the pressure is transmitted to the compression-resistant pipe 46 from the moisture-proof bead 45, the moisture-proof bead 45 and the compression-resistant pipe 46 can offset the external force through deformation, meanwhile, the factice filled in the compression-resistant pipe 46 can play a supporting role, the damage to the inside of the optical cable caused by the extrusion of the external force is prevented, and the compression-resistant pipe 46 can automatically recover to the original state after the external force disappears, so that the service life of the optical cable is greatly prolonged;

when the optical cable wets in the underground and meets water, dampproofing pearl 45, resistance to compression pipe 46, water blocking layer 3, first waterproof filler 422 and second waterproof filler 5 have multiple waterproof function, avoid the device outside water stain entering into inside under long-time use to lead to the fact the damage to the wire rod, improve the device's life.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. An underground optical cable with a waterproof function comprises an insulating rubber sleeve (1), and is characterized in that a buffer layer (2) is arranged inside the insulating rubber sleeve, a water-blocking layer (3) is arranged inside the buffer layer (2), and a cable core (4) is arranged in the water-blocking layer (3);

cable core (4) are including polyethylene sheath (41), fiber tube (42), tensile hemp rope (43), central reinforcing core (44), dampproofing pearl (45) and resistance to compression pipe (46), polyethylene sheath (41) set up in the inside of water blocking layer (3), the edge of resistance to compression pipe (46) all with the inner wall fixed connection of polyethylene sheath (41), it is a plurality of dampproofing pearl (45) equidistance fixed connection is in the inner wall of polyethylene sheath (41), central reinforcing core (44) is located the middle part of polyethylene sheath (41), and is a plurality of tensile hemp rope (43) equidistance distributes in the inner chamber of water blocking layer (3), and is a plurality of fiber tube (42) equidistance distributes in the inner chamber of polyethylene sheath (41), tensile hemp rope (43) and fiber tube (42) cross arrangement.

2. An underground optical cable with a waterproof function according to claim 1, wherein the optical fiber tube (42) comprises a loose tube (421), a first waterproof filler (422) and optical fibers (423), a plurality of the optical fibers (423) are located in the inner cavity of the loose tube (421), and the first waterproof filler (422) is filled in the inner cavity of the loose tube (421).

3. A water-proof underground optical cable according to claim 1, wherein the buffer layer (2) is made of elastic insulating material and the water-blocking layer (3) is made of polyethylene material.

4. An underground optical cable having a waterproof function according to claim 1, wherein the central strength core (44) is a metal material, and polyethylene is provided outside the central strength core (44).

5. An underground optical cable with waterproof function according to claim 1, wherein the cross section of the pressure-resistant tube (46) is regular hexagon, the pressure-resistant tube (46) is elastic rubber material, and the cross section of the moisture-proof bead (45) is semi-circular.

6. An underground optical cable having a waterproof function according to claim 1, wherein a second waterproof filler (5) is filled between the central core (44) and the pressure-resistant tube (46).

7. An underground optical cable with waterproof function according to claim 2, characterized in that the first waterproof filler (422) and the second waterproof filler (5) are both ointment, and the loose tube (421) is PBT material.